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- STC (Sound Transmission Class) is a measurement that indicates how much noise is stopped (absorbed) by the wall or floor ceiling assembly. (airborne or voice noise)
- IIC (Impact Insulation Class) is a measurement that indicates how much impact noise is stopped in a floor/ceiling assembly.
- STC and IIC are logarithmic, like the Richter scale. Each 10 points represents a doubling of the noise reduction capacity of an assembly.
There are several types of acoustical treatments that can be utilized. Which one to use is usually dictated by the building engineer, or home owners association.
Recomended Product Rating: iic/stc
6mm Cork 59/
12mm Cork 66/
What are STC's and IIC's and how do they work?